While using Ram Frame I notice strange in-plane moment values in my concrete or other-wall shear walls.  When using section cuts I find that the moment fluctuates almost randomly with the height of the wall.  I EXPECT to see a max moment at the base of the shear wall and a zero moment at the top, (cant. condition) or a max moment at the top and bottom (fixed fixed condition).  Instead, I see the moment fluctuates from negative to positive in almost completely random locations.  Can anyone explain this to me?  Is there something I'm missing?

More info:  Wall has no openings, one story, flex diaphragm.